Clock



FIG. 1 is a front perspective view of a clock case showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a left side elevational view, the right side being a mirror image thereof;

FIG. 5 is a bottom plan view thereof; and,

FIG. 6 is a rear elevational view thereof.

The broken line showing of a dial in FIGS. 1 and 3 is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a clock, as shown and described in the drawings. 